Gauge and core for stereotype mold boxes



Sept. 19, 1950 s. I. GRIGLAK 2,522,869

GAiJGE AND CORE FOR STEREOTYPE MOLD BOXES Filed March a, 1949 I 2 Shets-Sheet 1 p G 11 IN V EN TOR. 5 Srimnv Ge/GLAK, & I I 4/ 35' BY V. 5 /9 as 13 WWW/WW 7W [5&- 42 J 3" 3 147' 7' oezvs Y6.

Sept. 19, 1950 s. l. GRIGLAK GAUGE AND cons: FOR STEREOTYPE MOLD soxzs 2 Sheets-Sheet 2 IN V EN TOR. 6 216!- An Grew/151v Flled March Patented Sept. 19, 1950 UNITED STATES. PATENT OFFICE GAUGE AND CORE FOR STEREOTYPE 'MOLD BOXES.

Stephen I. Griglak, Manassas, Va. Application March 8, 1949, Serial No. 80,207

1 Claim. 1.

My invention relates to improvements in mold boxes for molding stereotype plates, and more particularly toattachmentsfor such :boxes. The mold box and attachments disclosed hereinafter are specifically adapted for the moldingof stereotype plates of a width for either one or two columns of newspaper space, but obviously may be utilized for other typesofstereotype plates. Conventional mold boxes for stereotype plates include a flat bed adapted to support the matrix, a lid having a flat inner surface adapted to be clamped to the bed, and type-high. sidebearers comprising gauges "for spacing the lid from the bed a distance equal to the thickness of the mold or platedesired. In such mold boxes, the. molded plate is substantially thick and heavy and requires considerable work. and effort to carry the same fromplace to place. Moreover, when a number of such plates are placed in a printing form, it increases the weight of the-form: substantially. Also, such thick plates normallyzhave to be trimmed foruse and require considerable work to trim them to. the prop-er size for use. I am aware that mold boxes have beenmade wherein theinner surface of thelid has formed thereon or detachably secured thereto by screws or. otherwise cores for forming recesses in the back of the plate, whereby to lighten the same. However, these'structures are expensive and are especially designed for casting plates of a fixed measure. Thus, where theuser must cast a plate of a size considerably smaller than the interior of the mold box, such boxes cannot be used and a conventional box must be usedinstead. Alternatively, theprinter would have tohave a sepatype-highsidebearer-for use with conventional mold boxes for stereotype plates.

A further object is. to provide an improved core for use with conventional mold boxes for stereotype plates.

A further objectis to provideanwimproved" combination of type-high side bearersand cores for stereotypeamold boxes. l '1 A further object-isto provide anvimproved pair of type-high side bearers for useiihwstereo- 1 type mold boxes,which'rside'bearersinclude inable core for a stereotype mold box. together with novel means for supporting the removable core in aproper-position inwardly of the mold box and in overhanging relation to the bed. thereof.

Other objects and. advantages reside in the particularstructure of thedevice, combination and arrangement of the several parts thereof, and will be readily, understood by those skilled in the art upon reference to theattached drawing in connection with the following specification, wherein the invention is shown, described and claimed.

In the drawing:

Figure 1 is aplan view of an improved rem'ovable core foruse ina stereotype mold box;

Figure 2 isa side elevation thereof;

Figure 3' is a bottom plan, View thereof;

Figure 4 .is a view like Figure 2, but on a reduced scale and showing the core in position in the mold box, the mold bo-X being shown in longitudinal vertical section;

Figure 5 is a fragmentary transverse vertical sectional view on a greatly enlarged scale showing the removable core in position in the mold box;

Figure 6 is a plan view of a type-high side bearer for use in a stereotype mold box;

Figure 7 is a sideelevatio-nal view thereof;

Figure 8 is abbttom planview thereof;

Figure 9 is anend elevational view thereof looking in the direction of the arrowfi of Figure 6;

Figure 10 is a transverse vertical sectional view on a greatly enlarged scale showing the use of theside b'earersof Figures '6 to 9, inclusive, in a stereotype mold box;

Figure -11 is a view like Figure 10 on a. reduced scale and showing the use of a slightly different form of removable core.

Figure 12 is a fragmentary transverse vertical sectional view showing an alternative way of using the side'bearer of Figures 6 to 10, inelusive.

Referringspecifically to the drawing, wherein likereference character-s havebeen used throughout the several views to designate like parts, and

referring at first to Figures 4, 5, 10 and 11, I2

designates generally aconventional mold box for stereotype plates, which box includes a bed [3 having a fiat uppersurface l l adapted to support amatrice: I9 thereon. The mold box 12 includes alidwlihaving awfiat under surface l6.

The lid is adapted to be clampingly secured to the bed I3 by any suitable clamps I'I pivoted to either the lid or the bed by any suitable pivots I3. Figure illustrates the lid I5 spaced from 1 the bed I3 by conventional type-high side bearers 23, only one of which is shown. As so far described, the structure is conventional and forms no part of my invention.

Referring now to Figures 1 to 5, inclusive, 2| designates generally a removable core for use with the conventional mold box aforesaid. This form of removable core is adapted for use with mold boxes for casting stereotype plates having the width of one newspaper column. The core 2| comprises a type-high bearer portion 22, one end of which has fixedly secured thereto or integral therewith, as shown, an elongated core portion 23. The free end of the core portion 23 may be beveled as shown at 24, and is intended to abut a type-high side bearer 25, Figure 4, closing one end of the mold box. The bearer portion 22 and core portion 23 have flush top surfaces 28 complementary to the inner surface I6 of the lid I3 of the mold box. The bearer portion 22 has an under surface 21 formed with a transverse rooker portion 28. In the embodiment illustrated, the under surface 21 is beveled rearwardly and upwardly to provide a forwardlylocated knife edge 28 which bears upon the upper surface I4 of the bed l3, or rather, upon the upper surface of the matrice I9. The bearer portion 22 also has the rearward extension 29 integral therewith which interfits with any suitable handle 33 of heat-insulating material, and which is secured thereto by any suitable means, such as the machine screws 3|, Figure 1.

In use, the removable core 2| is preheated in any suitable manner to substantially the temperature of the molten-type metal to be cast into the mold. The core is then inserted in the mold longitudinally thereof with the rocker 23 resting atop the matrice I3. Obviously, the weight of the core portion 23 will cause the same to sag downwardly, whereby to project the rear portions of the bearer portion 22 upwardly. However as soon as the lid I5 is clamped into place, the bearer portion 22 will be rocked on its rocker 23 and the upper surface 26 of the same and of the core portion 23 will be forced tightly against the sheet 40 and under the surface I6 of the lid I5. This arrangement prevents type metal from getting on top of the core portion 23. Also, this ensures against slight irregularities permitting a loose fit of the core portion in the mold box.

Preferably, the said core portion 23 is highly polished to minimize chances of engagement with the type metal. This desirable feature is enhanced by the preheating of the core portion 23, whereby the same is readily removed from the cast plate after the lid I5 has been raised. While, as shown, the removable core 2| is usable with standard type-high side bearers 20, as shown, I prefer to use it with type-high side bearers now to be described and best seen in Figure 6 to 10, inclusive.

As there illustrated, I have provided a pair of complementary type-high side bearers 33 and 34 for the left and right-hand sides, respectively of the mold box IE. As the bearers 33 and 34 are substantially identical, only one will be described in any great detail. Thus, the left-hand side bearer 33 comprises a type-high side bearer portion 33 adapted to be clampedbetween the lid I5 and bed I3 in a conventional manner. However,

such side bearer 33 is formed with an undercut inner side providing an elongated core portion 35 which projects inwardly of the mold box in overhanging relation to the bed and matrix. The side bearers 33 and 34 are, of course, formed of highly polished material and are adapted to be preheated to substantially the temperature of the molten type. Also, I prefer that the rear end of each side bearer have a handle 37 of the same material formed integrally therewith. Thus, the handling of the side bearers is facilitated. The right-hand side bearer 34 likewise includes a side bearer portion 36 and an overhanging core portion 35, which, except for the reversal of the location of the parts, is identical to the side bearer 33. As is apparent from Figures 10 and 11, the side bearers 33 and 34 supplement the removable core 2| and provide recesses in the back of the stereotype plate, whereby to lighten the same and also reduce the thickness thereof at the side edges, whereby to facilitate the trimming of the plate to a proper width. As shown in Figure 12, where it is desired to form the plate with side edges of full thickness, as would be the case with the customary side bearers 23 of Figure 5, the operator need only reverse the side bearers 33 and 34 so as to present the bearer portions 36 and 36 to the interior of the mold box.

Figure 11 illustrates a slightly modified form of removable core which is adapted for use in molding stereotype plates having a width equal to two newspaper columns. Thus, the removable core 4| there illustrated includes a type-high bearer portion 42 and an integral core portion 43 which is substantially wider than the corresponding core portion 23 of the first-described removable'core. Likewise, it should be understood that the bearer portion 42 includes a transverse rocker which may be similar to the rocker 28 of the first-described form and which functions in the same manner. Obviously, removable cores of other configurations for wider'cuts may be formed within the scope of the invention.

In all forms of the invention, the sheet 49 of heavy paper or cardboard is interposed between the inner surface I6 of the top I5 and the bearing surfaces of the members 20, 2|, 25,33 or 34 or 4|. The purpose of the sheet 40 is, of course, to prevent the type metal from sticking to the surface III of the cover or top l5.

It is contemplated that the cores 2| or 4|, as well as the side bearers 33 or 34, may come in a variety of sizes. Thus, although a single pair of side bearers 33 and 34 may be utilized continuously with a different box, it might be necessary to use a plurality of cores 2| or 4| and/or cores of larger or smaller size than those illustrated. Likewise, it might be desirable to use two or more cores 2| or 4| in the same box in certain circumstances. Moreover, the use of such cores 2| or 4|, or variations thereof, gives great flexibility to a standard stereotype box, in that it enables the printer to cast plates of any size within the dimensions of the box, and to form a recess in the back end or side edges of the plate so molded irrespective of its size.

Thus, while I have shown and described what is now thought to be the preferred embodiments of the invention, it is to be understood that the same are susceptible of other forms and expressions. Consequently, I do not limit myself to the precise structures shown and described hereinabove except as hereinafter claimed.

I claim:

An elongated removable core for use with a stereotype mold box having a fiat bed for supporting a matrix and a lid provided with a flat inner surface, said core comprising an elongated generally rectangular bearer portion engaging between the bed and lid and having a flat top surface and a slightly longitudinally inclined bottom surface arranged at a slight angle to the top surface of the bearer portion and flat inner surface of the lid, one end of the bearer portion being slightly taller than the opposite end thereof, the bottom surface of the bearer portion terminating at the taller end thereof in a transverse substantially sharp edge about which the core rocks, and an elongated core portion secured to the taller end of the bearer portion and extending longitudinally of the bearer portion and engaging between the bed and lid, the core portion having a flat top surface substantially flush with the fiat top surface of the bearer portion, the bottom of the core portion being transversely rounded and spaced above said transverse edge throughout the entire length of the core portion for forming a clearance space between the bottom of the core portion and bed, whereby when the lid is closed the core rocks upon the transverse edge of the bearer portion and the top surface of the core portion swings into positive engagement with the flat inner surface of the lid.

STEPHEN I. GRIGLAK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 163,449 Brooks May 18, 1875 297,023 Smith Apr. 15, 1834 735,804 Partridge Aug. 11, 1903 1,196,824 Toomey Sept. 5, 1916 2,120,451 White June 14, 1933 FOREIGN PATENTS Number Country Date 5,817 Denmark Aug. 30, 1902 

